Kanye West has gone on another lengthy rant - this time aimed at US President Obama.

The 36-year-old rapper hit out at Obama, insisting he can't do anything to "effect change" without "money" - though he then went on to proclaim "genius" to be "extremely cheap".

Asked about the president, who recently announced he was sending up to 300 military advisers to Iraq, in an interview with Power106FM, he ranted: "You can't effect change from inside the White House like that ...You gotta have the money.

"Good ideas usually aren't connected to money as much... Creativity and extreme genius are extremely cheap."

He said: "Don't worry about how I'm saying what I'm saying. Look at what I'm saying and how I feel my intent is. "You do not want to go against the power. I'm working on one mission, and that's a mission from God.

"I'm gonna make it very clear exactly what I'm here to do. I'm here to help. I'm going to apply all the blessings I've got.

"We're moving to the future. [And] I'm gonna be the anchor."

Just last November, Kanye vowed never to mention the president again as he felt the politician - who has criticised the rapper on a number of occasions - was using his name to be "down" with young people.

He said: ''I just think that we're pop icons, and the president likes to use that type of thing just to be down.

(Photo: Rex)

''People were fine with me being everyone's punching bag for about five years - 'This is the person we love to hate, so if you want to distract people from everything that's going on... just say you hate Kanye and there's going be 30 other people who say they hate Kanye.'

''I'm not going to mention him anymore, I'm past that, that's out my thoughts. That's lowering my priority of thinking at this point.''

Obama previously spoke out about the New Slaves hitmaker to urge young people not to look to the wealth of the rapper and his now-wife as an example of success, and branded him a ''jackass'' after he interrupted Taylor Swift's 2009 MTV Music Awards acceptance speech.